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  1. 2019New_Mesh_Tree_Hierarchy.txt 
    https://www.nlm.nih.gov/.../download/2019New_Mesh_Tree_Hierarchy.txt
    ... E02.621 Magnetic Field Therapy E02.621.820 Transcranial Magnetic Stimulation E02.631 Mechanical Thrombolysis E02.642 Nutrition Therapy ... 673 Quartz Crystal Microbalance Techniques E05.978.808 Reference Standards E05.978.808.249 Fiducial Markers E05. ...
  2. NLM Classification 2011 Edition Now Available. NLM Technical Bulletin. 2011 Mar–Apr 
    https://www.nlm.nih.gov/pubs/techbull/ma11/ma11_classification.html
    ... P8 Pneumoencephalography WL 141 WL 141.5.T7 Transcranial magnetic stimulation WL 141 WL 301 Central nervous system diseases ... Field Tests Numerous main index entries and cross references were modified to reflect changes in the MeSH ...